Cutting and welding torch.



A. F.1ENKINS;

f, ,M fw my fw Fm cumms Ann wELomsToRcH APPLICATION FILED FEB. 2| 1918. 1,274,053

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ALEXANDER E. JEivxiNs, or BALTIMORE, MARYLAND.

CUTTING AND WELDING TORCH.

Specification of Letters Patent.

Patented July 30, 191,8.

Continuation in part of application Serial No. 114,214, led August 10, 1916. This application 1ed- February 21, Y1918. Serial No. 218,489.

To all whom t may concern:

Be it known that I, ALEXANDER F. JENKINS,

a citizen of the United States, andresiding at Baltimore, State of Maryland, have invented certain new and useful Improvements in Cutting and Welding Torches, of which the following is a specification.

My present invention comprisesan. acetylene cutting' and welding torch having interchangeable tips for cutting and welding respectively.

The object of the invention is to simplify and cheapen. the structure of such. apparatus, to render them more eiiicient, and to adapt the same torch in a convenient manner to either cutting or welding.

rlhe invention will bel described. in connection with the accompanying drawing, in which:

=Figure 1 is a sectional view of the head of a torch with a cutting tip attached;

Fig. 2 is a partial section on a plane at right angles to Fig. 1;

Fig. 3 is a bottom plan view of the torch head;

Fig. 4 is a top planview of the cutting tip shown in Figs. 1 and 2;

Fig. 5 is a sectional view similar to Fig. 1 but showing a welding tip substituted for the cutting tip of Fig. 1;

Fig. 6 is a top plan view of the tip shown Y in Fig. 45;

Figs. 7 and 8 are longitudinal sectional views of welding Vtips embodying the .invention and adapted to be substituted for the tips shown in JFigs. 1, 2 and 5.

The torch head A is a solid block of metal adapted to receive the pipe or tube 10 to supply oxygen for cutting purposes and also tapped to receive pipes 11 and 12 to supply acetylene and oxygen, respectively, for heatinv or welding'purposes. The head is preferably a right angle structure having, in the position .shown in the drawing, a horizontal arm to which the pipes 10, 11 and 12 are connected, and a vertical arm to the lower end of which the tips are connected. The lower end of the vertical arm has a seating face for the tips having a central opening 13 and annular grooves 14, 15. A central right angled passage 16 connects the central opening 13 with the tube 10 which supplies high pressure oxygen for cutting u connecte by passages 17, 18, with the pipes .tobes urposes. The grooves 14, 15, are' 12and 11 respectively. The. passages 16, 17 and 18 are drilled in the solid head A. Ad- ]acent the seat for the tip the head is threaded at 1-9 toreceive a threaded union 20 having an inturned llange 21 which en ages. al shoulder on the tip. Surroundingt e seat on the head is a groove 2 2 to receive a e on the tip, the outer marginal wall 23 0 seating face Vto protect said face from Jury when the coupling 20 and the tip are removed.

The tip B shown in Figs. 1, 2 and, 4 has a central or axial passage 24 for cutting oxygen which is alined with the. vertical branch of the passage 16,- and it has. one` or more side passages 25 which are branched at the upper end to communicate with the,

grooves 14, 1 5, to receive both oxygen and acetylene which are mixed in the passage. 25. The tip is also provided with a shoul- 'der` 26 to be engagedv by the lipt 21 of the e headl being carried down below the When it is desired to adapt the torch for only the cutting oxygen is r uir ut off, and to' accomplish thisein thi simplest and cheapest and also most ei'ecw tive manner, I provide a special tip as shown in Figs. 5 to 8 inclusive, in various forms, in which there is no central opening .and which therefore closes the oxygen passage 16` securely when the tip is connected to the head, as shown in Fig. 5. The tip B, shown in Figs. 5 and 6, is of exactly the same construction as that shown in Figs. 1 and 2, excepting that the central portion 30 of its seatinor face is solid and adapted to securely close ille oxygen passage 16. This tip has two side passages 25a which are branched at their upper ends to receive the gas and oxygen from the pi es 11 and 12. These bores 25a converge an unite in a single bore 31 at the free end of the tip.

The tip B2 shown in Fig. 7 is the same as that shown .in Fig. 5, exceptin that it has but one mixture passage 25b ranched at welding the upper end to receive oxygen and acetylene, for welding or heating purposes. The tip B3 shown in Fig. 8 is the same as that shown in Fig. 7, excepting that the passage 25c is at right angles to the seating face of the tip. In this figure the broken line 32 indicates the axis of the tip at right angles to its seating face and the bore or conduit 25 is parallel t0 its axis. In each of the tips shown in Figs. 5 to 8 inclusive, the scating face of the tip is provided with annular grooves 14a, 15, to register with the grooves 14, 15 in the head and to supplement these grooves and provide free flow of gases to the openings in the tips. The annular partitions between the grooves 14-, 15'1 are adapted to fit against the annular partitions between the grooves 14 and 15 in the head. The central portion 30 of the face of each tip B, B2, B3 is lat and Without any perforation and adapted to close the high pressure oxygen or cutting oxygen passage 16.

I prefer to provide the various tips with straight passages 25, 25a, 25", 25c communicating with the oxygen grooves 14, 14a and to bring the acetylene gas into these passages by inclined or angular passages `communicating with the annular grooves 15, 15a as this arrangement gives the best Jnixing and most effective heating results.

In changing from a cutting to a welding torch or vice versa, it is simply necessary to remove the union or coupling and exchange tips and replace the coupling securely. The annular grooves in the face of the head convey the gases to the conduits in the tip regardless of the angular position of the latter, and hence it is not necessary to pay any attention to the angular position on the head.

This application is a continuation, in part, of my pending application Serial No. 114,214, filed August 10, 1916, allowed November 12, 1917.

Having thus described my invention what I desire to secure by Letters Patent is:

1. In a welding and cutting torch, the combination with a solid head having a face provided with annular grooves and a central opening, passages in said head to convey gases to said grooves and opening, and a Weldlng or heating tip having a face adapted to t against the marginal partitions of said grooves, a solid portion of said :tace being adapted to block 0E one of the passages inthe head, and passages in said tlp to receive and convey gases from the remaining passages in the head.

2. In combination in an acetylene welding and cutting torch, with a head having a passage for cutting oxygen and passages for welding gases, of a removable tip, and means for connecting the same to the head, said tip having a solid portion to block off the cutting oxygen, and passages to receive the welding gases and convey them to the extremity of the tip.

3. In a cutting and welding torch, the combination with a right angled head having angular passages therein for cutting and welding gases, a seating face for a tip, the passage for cutting gas having an outlet centrally arranged on said seating face, interchangeable cutting and welding tips having faces adapted to said seating face, and means for detachably connecting either tip to the head, the cutting tip having a central passage for cutting oxygen and passages for the heating gases and the welding tip having passages for the heating gases, and a central solid portion on its face adapted to block off the cutting oxygen.

4. In combination in an acetylene welding and cutting torch, with a head having a central passage for cutting oxygen and side passages for welding gases, of a removable tip, and means for connecting the same to the head, said tip having a central solid portion to block off the central oxygen passage in the head, a straight side passage for the welding oxygen, and a branch to said straight passage to conduct into said straight passage the fuel gas for welding.

In testimony whereof I aiiix my signature.

ALEXANDER F. JENKINS.

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